2 availability checks were conducted for sandcastle.khanacademy.org during the 1 167 days beginning September 14, 2021. Sandcastle.khanacademy.org responded with a 200 status code and was up 2 times out of all checks that were conducted, lastly on April 4, 2022. As of November 25, 2024, no inactive periods were found for sandcastle.khanacademy.org throughout all checks. Based on the replies, there were no indications of errors in any of the responses as of November 25, 2024. The April 4, 2022, response contrasted, being 0.160 seconds for sandcastle.khanacademy.org against its 0.406 seconds average.